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QuickStats: Percentage of Persons With Current Asthma* Who Used
Inhaled Medication During the Preceding 3 Months, by Medication Type
and Symptom Severity Level --- United States, 2003

* Persons with current asthma were respondents who reported ever being told by a medical professional that they had asthma and who still had asthma.

 The frequency of symptoms and degree of activity limitation were used to classify those with current asthma into four symptom severity groups. Levels are
defined by the National Asthma Education and Prevention Program in
Guidelines for the Diagnosis and Management of Asthma
(available at
http://www.nhlbi.nih.gov/guidelines/asthma/asthgdln.htm).

In 2003, approximately two thirds of persons with current
asthma used one or more inhaled medications during
the preceding 3 months, and the proportion using inhaled medications increased
with levels of symptom severity. Approximately half of all respondents with asthma used a
B2A-S rescue inhaler, one third used an inhaled corticosteroid,
and one fifth used a B2A-L inhaler. Each symptom severity
level had a similar pattern of inhaled medication use.

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